Interrogator and system employing the same
First Claim
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1. An interrogator, comprising:
- a receiver configured to receive return signals from a tag;
a sensing module configured to provide time estimates associated with said return signals; and
a processor configured to employ synthetic aperture radar processing on said return signals in accordance with said time estimates and an estimated velocity of said interrogator relative to said tag to coherently integrate said return signals to locate a position of said tag.
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Abstract
An interrogator and system employing the same. In one embodiment, the interrogator includes a receiver configured to receive a return signal from a tag and a sensing module configured to provide a time associated with the return signal. The interrogator also includes a processor configured to employ synthetic aperture radar processing on the return signal in accordance with the time to locate a position of the tag.
314 Citations
20 Claims
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1. An interrogator, comprising:
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a receiver configured to receive return signals from a tag; a sensing module configured to provide time estimates associated with said return signals; and a processor configured to employ synthetic aperture radar processing on said return signals in accordance with said time estimates and an estimated velocity of said interrogator relative to said tag to coherently integrate said return signals to locate a position of said tag. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of operating an interrogator, comprising:
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receiving return signals from a tag; providing time estimates associated with said return signals; and coherently integrating said return signals by employing synthetic aperture radar processing on said return signals in accordance with said time estimates and an estimated velocity of said interrogator relative to said tag to locate a position of said tag. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification